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Hey all. Traded a 94K mile 2011 GMC Sierra 1500 Extra Cab SLE Z71 4x4 (with an ALC upfitter package) for a 26K mile 2018 Chevrolet Silverado LTZ 2500 HD Duramax last Saturday.

Never had any issues with the Sierra - really nice truck overall. But we took the plunge into RV'ing 2 years ago and went with an newer, bigger TT this year. Really put the Sierra right at the edge of payload and towing capacity. No fault to the Sierra at all - RV'ing wasn't on the radar 9 years ago when we bought it.

So it was time for something more capable given what we're doing today. A 2500 platform was on the radar and a diesel was preferred. This one popped up at the right time for the right price, so we brought it home.
 

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Congrats and welcome!

Almost pulled the trigger on that same color scheme! The L5P is a whole nother animal man. Have you hooked it up to anything yet?
 

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Totally new to the diesel world - but have been hanging on the fringes for a long time. Have friends with various incarnations - LLY, LMM, LML, etc. L5P seems to be a well received setup. Pros and cons to all I'm sure. And I'm a boring guy too (to steal a bit a of a title from another thread in this sub-forum.) No plans to tart it up - just let it do its thing.

Do need to get it hooked up to the TT seen in the background. At a minimum to get the WDH reconfigured for this truck. And to get a read on how it feels before we take off for our first road trip behind this beast.

It's absolutely silly (and awesome) that a 7K+ lb truck can pull down 20+mpg. I've got a '78 Trans Am (coincidentally also with a 6.6) that can't come close. Of course, to be fair, there's about 40 years of tech separating the two. :)
 

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That Trans Am was made for speed. You truck was designed and built as a Pulling Machine,

Since you aer new to diesels this thread may be of interest:


Also search for an dread threads about pullng, gears, RPMs etc. for best performance while towing. That engine gets it peak TQ around 1800 RPM so keeping it out of 6th gear and the RPM between 1800 and 2400 will actually let it run cooler. In the mountains let it run even higher RPM in a lower gear to keep it cool.
 
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